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Operation: 1. Aeration. Connect the gas port to the air stone by the airway and put the air stone in the water. Long press the "PUMP ON/OFF" button for 2 seconds to turn on or off the pump. When it is working, short press the "PUMP ON/OFF" button, the revolving speed will be changed among low speed, medium speed and high speed. 2. Illumination. Press the "LED ON/OFF" button twice to turn on or turn off the white LEDs. 3. Charge digital product with DC5V input, such as mp3, mp4, cellphones, cameras, etc. Put the USB plug into this product`s "OUT DC5V" port to charge.

Attention: 1. Please don't put the body of the product in the water or expose it to rain. 2. Keep the solar panel clean and avoid collision. 3. Do not charge this product with different electrical parameters power. 4. If it is not used for a long time, you should charge it once a month for saving battery life.